Oxygen Sensor Monitor
OBD System Description - Oxygen Sensor MonitorSystem Description / Monitoring Procedure
Primary HO2S
For a primary HO2S, the system monitors maximum and minimum voltage, lean-to-rich and Rich-to-lean response rates, and switching cycles during monitoring conditions once per driving cycle. The sensor is also monitored for activity continuously.
Secondary HO2S
A secondary HO2S is used for catalyst monitoring and dual oxygen sensor control for fuel control system. The output voltage of the secondary HO2S is maintained to be close to target voltage by dual oxygen sensor control. With non-aged catalyst system, amplitude of the voltage changing is very narrow and slow. But along with aging of the catalyst, the amplitude is going to be wider and quicker. Then the system calculates average of the voltage during monitoring conditions once per driving cycle, and compares the average with malfunction criteria.
DTC Description / Detecting Condition / Confirmation Procedure
P0131, P0132
Refer to DTC P0131 / P0132: O2 Sensor (Bank 1 Sensor -1) Circuit Low Voltage / High Voltage. P0131 P0132
P0133, P2A00
Refer to DTC P0133 / P2A00: O2 Sensor (Bank 1 Sensor-1) Circuit Slow Response / Performance. P0133 P2A00
P0134
Refer to DTC P0134: O2 Sensor (Bank 1 Sensor-1) No Activity Detected. P0134
P0137, P0138
Refer to DTC P0137 / P0138: O2 Sensor (Bank 1 Sensor-2) Circuit Low Voltage / High Voltage. P0137 P0138
P0139, P2A01
Refer to DTC P0139 / P2A01: O2 Sensor (Bank 1 Sensor-2) Circuit Slow Response / Performance.
P0151, P0152
Refer to DTC P0151 / P0152: O2 Sensor (Bank 2 Sensor-1) Circuit Low Voltage / High Voltage. P0151 P0152
P0153, P2A03
Refer to DTC P0153 / P2A03: O2 Sensor (Bank 2 Sensor-1) Circuit Slow Response / Performance. P0153 P2A03
P0154
Refer to DTC P0154: O2 Sensor (Bank 2 Sensor-1) No Activity Detected. P0154
P0157, P0158
Refer to DTC P0157 / P0158: O2 Sensor (Bank 2 Sensor-2) Circuit Low Voltage / High Voltage. P0157 P0158
P0159, P2A04
Refer to DTC P0159 / P2A04: O2 Sensor (Bank 2 Sensor-2) Circuit Slow Response / Performance.
Operation Part 1:
Operation Part 2:
Primary HO2S Monitor
Operation Part 1:
Operation Part 2:
Primary HO2S Circuit Monitor
Operation Part 1:
Operation Part 2:
Secondary HO2S Circuit Monitor
Operation Part 1:
Operation Part 2:
Secondary HO2S Monitor
MODE $06 Data Part 1:
MODE $06 Data Part 2:
MODE $06 Data